[WMN] Trying to set up a mesh network

[Cristian Nasuti]

Hi Moises,
measures of throughput is also my goal at this time.

The first tests were a disaster until I realized that in the testing place
there are too many WLAN that may interfere.

The mesh network by default operates on channel 1, but doing "iwlist scan" I
saw that too many networks use it.
So I find a free channel, quite distant from others (unfortunately WLAN
channels are overlapped).

You can change the channel using:

iw dev MP_INTERFACE_NAME set channel #

where # is a free channel.
the supported channel of you WLAN card is available with command "iwlist
channel".

For testing I use iperf:
server side: iperf -s -u -i 10
client side: iperf -c 10.0.0.6 -u -b 54M -t 180 -i 10

I did some tests with 2 nodes in the same room (approx 4x4m) and the average
througput is around 20 Mbits/sec.
Then I tried spreading the nodes in the lab: at a distance of 17m but
through 4 walls (13cm) drops to 2 Mbits/s.

I also tried with 3 or 4 nodes forcing the multi-hop with mpath del/new
commands and performance are similar.

My problem now is to evaluate the performance when a node is turned off.
Unfortunately this event causes the freezing of iperf and of the system.


I hope you are luckier than me,
bye


Cristian Nasuti
_____________________________________________________________

nasuti.cristian at gmail.com [Mail, GTalk, Live Messenger]
_____________________________________________________________


2009/11/30 moimart <moimart at gmail.com>

> Hi Cristian,
>
> Just one aside question. What is the average throughput you get with your
> setup?
>
> Thanks!
>
> Br,
> Moises
>
>
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